"""Pushetta platform for notify component."""
import logging

import voluptuous as vol

from homeassistant.const import CONF_API_KEY
import homeassistant.helpers.config_validation as cv

from homeassistant.components.notify import (
    ATTR_TITLE,
    ATTR_TITLE_DEFAULT,
    PLATFORM_SCHEMA,
    BaseNotificationService,
)

_LOGGER = logging.getLogger(__name__)

CONF_CHANNEL_NAME = "channel_name"
CONF_SEND_TEST_MSG = "send_test_msg"

PLATFORM_SCHEMA = PLATFORM_SCHEMA.extend(
    {
        vol.Required(CONF_API_KEY): cv.string,
        vol.Required(CONF_CHANNEL_NAME): cv.string,
        vol.Optional(CONF_SEND_TEST_MSG, default=False): cv.boolean,
    }
)


def get_service(hass, config, discovery_info=None):
    """Get the Pushetta notification service."""
    api_key = config[CONF_API_KEY]
    channel_name = config[CONF_CHANNEL_NAME]
    send_test_msg = config[CONF_SEND_TEST_MSG]

    pushetta_service = PushettaNotificationService(api_key, channel_name, send_test_msg)

    if pushetta_service.is_valid:
        return pushetta_service


class PushettaNotificationService(BaseNotificationService):
    """Implement the notification service for Pushetta."""

    def __init__(self, api_key, channel_name, send_test_msg):
        """Initialize the service."""
        from pushetta import Pushetta

        self._api_key = api_key
        self._channel_name = channel_name
        self.is_valid = True
        self.pushetta = Pushetta(api_key)

        if send_test_msg:
            self.send_message("Home Assistant started")

    def send_message(self, message="", **kwargs):
        """Send a message to a user."""
        from pushetta import exceptions

        title = kwargs.get(ATTR_TITLE, ATTR_TITLE_DEFAULT)

        try:
            self.pushetta.pushMessage(
                self._channel_name, "{} {}".format(title, message)
            )
        except exceptions.TokenValidationError:
            _LOGGER.error("Please check your access token")
            self.is_valid = False
        except exceptions.ChannelNotFoundError:
            _LOGGER.error("Channel '%s' not found", self._channel_name)
            self.is_valid = False
